Mechanical loom for weaving wilton and other carpets



G. J. GILHET April 7, 1931.

MECHANICAL'LOOM FOR WEAVING WILTON AND OTHER CARPETS Filed Feb. 15, 1929 3 Sheets-Sheet 1 Joseph 6/7622 8 ATTORNEY: 1M

April 7, 1931. 1,799,226

MECHANICAL LOOM FOR WEAVING WILTON ANDO'IHER CARPETS G. J, GILHET Filed Feb. 15, 1929 5 Sheets-Sheet 2 G. J. GILHET 1,799,226

MECHANICAL LOOM FOR WEAVING WILTON AND OTHER CARPETS April 7, 1931.

Filed Feb. 15, 1929 3 Sheets-Sheet 5 ATTORNEYS.

Patented Apr. 7, 1931 GEORGES mam GILI-IET, F rams, FRANGE MECHANICAL Loom For: wnnv'rive WILTON AND when minews Appli'ation filed hebruan ,15, 1929, Serial No. 240,1?4, and in mm Februar 1928-.

a peculiar looped stitch somewhat similar to the knotted stitches ofOriential carpets on one face, but diiierin'g from these latter in that the design appears the same on the two sides ofthe cl'oth'or carp The present arrangement is constituted essentially :by a group of metallic frames carrying a large number of needles, the

frames being 'limitedby the space available between the driving shaft and the crank arm and the hey itself whatever may be the width afthe looin, these frames being a 'func hen of the fineness of the cloth which it is desired to obtain. I

In the annexed drawings:

Figures 1 and 2 represent side and end ele= vatihs, respectively, of the 'mechanism ni'ofinte'd on a loom fer weaving ordinary emanate; J i

Figine is an end elevation of a frame carrying" a complete mounted needle illus= tinting the central of the needles and 'a flex ihle partitieii.

Figure- 4- shews a needle having special nuts 1cc]: nuts. r r i Fgnnes 5-, 6 7, 8 and 9 represent various phases of the formation of a looped-stitch peculiar to the invention.

Figure is a partial elevation made at a lar er scale. 0 I

n Figures 5-9 the backing threads or stuiiei warps are. represented by broken lines, the binding warps by dotted lines and the pile threads by full lines.

Independent "frames 1 (Figures 1 and 2) not very thick, placed one behind the othef and separated by spacing collars 3 are assembled by tightening rods 4, the ends (sf which are threaded. A wing'nut 5 at each end tightens up the whole thus ensures a rigid assemblage and a rapid dismounting' in case of repaiis being necessary to any parts. I 7

These frames undergo alternating up- WaI Cl and tlOWiiWaTd lIiOVeIh'eht, tWO Of them, referably the 61nd. frames, are attached to split bearings 6 which are capable of rapid dis'mou-nting and which slide onguiding rods 7 iiired by means of collars 8 on the frames 8 of the lonm. V 1 The group of frames 1 above mentioned rests on a vertically slidable base 9 which has two longitudinal runners 10 serving as guide rails for the necessary displacement f the frames in case of repairs.

This base 9 receives at its cent-re a vertical spindle 11 which has two threade'tl'parts one having a right-ha nded thread and the other having a left-handed thread. These "two parts are connected by a special nut :12 and lock nut 12-.. The lower part of spindle 11 has a fork 13 carrying a roller 14 inaking contact with the shaped end of a lever 15 controlled by a suitable eccentric which is actuated by the lifting spindle of the *cornber board of the loom (not shown); an upward movement being thus tibtai-ned while the ver tical downwardmovement is obtained by the weight of the frames 1 themselves; the roller 14 being constantly in contact with the leiier 15 which communicates to it the :niiward movement,

The frames 1 carry special steel needles 2 threaded at the ends and attached thereby to these frames 1 by special nuts 16 and lock nuts 17-.

Engaging the upper end (if the lower nut 16 which is in the form of a square 16 (Fig. 4) is a sleeve 18 held in position by a lock nut 19; saidsleeve '18 being bored and threaded to receive a sihall threaded stop pin 20 having a spherical end, which pin serves for the manipulation of the needle 2 in the various positions which it takes up dhr'ing the work.

At a suitable height each needle 2 carries a hook 21, flexible partitions 22 dividing the groups of threads between the needles aiid being fixed to the upper ho'rizoiital part of the frame 1 and to a transverse stay 23 by threaded cross bolts 23, p

The 'manipu-lation'of the needles is effected by the stop pins 20 which engage the slidingplates' 24 having elongated holes receiving said pins 20. The lower part of plate 2% is out (Figure ,1) to correspond to the thread of the controlling screw 25 which is situated underneath and fixed to the frame by bearings 26. The controlling screw 25 engages throughout the length thereof a plate 27 in order to support said screw and prevent bending thereof. Plate 27 is cut on its upper edge similarly to plate 24 but is shorter and free to slide, being held in place by stops 28 and sliding on a straight edge 29, fixed to the frame 1. At the end of the screw 25 is keyed a toothed pinion 29 which engages racks 30 of the same pitch.

These racks 30 are pivotally mounted on longitudinal bars 31 which are fixed to the frame 8 of the loom by brackets 32 (Fig. 1) which may be disengaged and form bearings to permit the rapid displacement of the racks thereby disengaging said racks 80 and pinions 29 controlling the needles. The group of frames is then left free for dismounting and necessary repairs.

The racks 80 are provided on each side with a number of teeth calculated to give to the needles only the rotating movement necessary, one quarter of a turn, either forwards or backwards, the teeth being omitted corresponding to the period during which the needles are stationary.

In view of the diameter of the pinions 29 with respect to the small space between each frame, the pinions 29 and their racks 30 have been placed alternately on each side of the group of frames 1 and interposed thus: first frame, pinion to the right, second frame, pinion to the left and so on. In this way space is provided to allow for the diameter of the pinions as well as to obtain an equilibrium of the controlling movement.

Vhen the group of frames 1 is raised by the lifting spindle, transmitting its movement to the lever 15 and to the spindle 11, the pinions 29 engaging with the lower teeth of the racks 30 will transmit, through the screw 25, a forward movement to the plate 24 which carries the controlling rods 20 of the needles 2. The needles 2 will turn by a quarter of a revolution and will then remain stationary on account of the omission of teeth on the rack. Continuing to rise, the-pinions 29 will meet the teeth of the opposite rack 30 which will produce a reverse movement of the needles 2. In similar manner as the group of frames 1 falls, the weight of which is sufficient for this purpose, the same movements are transmitted to the needles in opposite directions.

Pursuant to the foregoing explanations, the weaving is effected in the following manner:

1st step-all the threads being stationary. Fig. 5, the jacquard raises the pile thread which .is to form the design. Figure 6, giving a raised shed as in the weaving of VViltons, in order to permit the passage of the wire 33; at the same time as the jacquard raises the pile thread, which is to form the design, the stuffer warps or backing threads and the binding warps are also raised approximately one-half the height of the design thread, these threads form a sheet which is situated at the level of the position of the wires 33 which are to form the plush in the fabric, thus facilitating the entry of the Wires. After the wire is passed, the jacquard is allowed to drip to rest; the stufi'er warps or backing threads and the binding warps remaining in the same position. During this first period the group of frames is inoperative.

2nd step-the jacquard now raises all the pile threads, which have not been raised the first time, to the height of the stuffer warps or backing threads and binding warps, leaving below the thread which has formed the plush with a slight restraint on the lifting of the jacquard. The group of frames 1 containing the needles: then enters into movement raised by its lever from below upwards, the pinion engaged in the rack 30 will transmit through the screw 25 a sliding movement to the plate 24 controlling the needles causing these to turn a quarter of a revolution, placing their hooks 21 in a position to hook up the pile threads which have formed the design. The group of frames continues its upward movement, the rack having no more teeth, the needles 2 remain constant, the hook 21 then meets the pile thread which has formed the plush (Fig. 7).

At this moment the pinion 29 meeting in its passage the opposite rack 30 will return back, transmitting to the needles a reverse movement and thus placing the hook 21 in a position to traverse the sheet of threads (Figs. 7 and 8) previously raised by the jacquard, said reverse movement stopping when the bottom of the hook 21 of the needle reaches the level of the sheet of threads. The group of frames 1 having reached the maximum of its upward movement, then has a period of rest, controlled by the usual eccentric not shown. With the rising of the group of frames there coincides the drop to rest of the stuffer warps and binding warps by the ordinary weaving means.

The falling of the stutl'er and binding warps and the work of the group of frames previously explained during its ascent, the passage of the weft 34 having taken place during the interval of rest, are thus forming the peculiar looped stitch causing the design to appear on the reverse side of the cloth.

Once the weft is passed (Fig. 8) the group of frames descends'to its starting point carrying out reverse movements to those executed in rising. With a slight retardation the jacquard or the comber board drops the pile threads to their starting position.

3rd stepthe binding warps are raised leaving at rest the stuffer warps or backing threads and the pile threads, the weft 35 is passed, (Figure 9), the binding warp drops to its starting point by the usual Weaving means and then the first stage recurs.

Having now particularly described and ascertained the nature of my said invention and in What manner the same is to be performed,

I declare that what I claim is '1. A loom for the mechanical Weaving of carpets comprising a plurality of frames laterally adjacent to each other in the direction of the length of said loom, a plurality of hooked needles arranged by groups in said frames, actuating means imparting an up and down motion to said frames and second actuating means simultaneously imparting an intermittent and reverse rotary move ment to said needles around their longitudinal axis.

2. A loom for the mechanical weaving of carpets comprising a plurality of frames laterally adjacent to each other in the direction of the length of said loom, guiding columns attached to said, loom and engaging said plurality of frames, a threaded spindle adjustable in length and screwed into the lower portion of said frames, a roller mounted in the lower end of said spindle, a lever pivotally mounted on said loom and adapted to actuate the corresponding roller, spindle and frame, actuating means imparting an up and down motion to said frames and second actuating means simultaneously imparting an intermittent and reverse rotary movement to said needles around their longitudinal axis.

3. A loom for the mechanical weaving of carpets having a plurality of frames laterally adjacent to each other and adapted to be vertically slidable, a plurality of needles each having a hook and being rotatably mounted in said frames, a sleeve and a pin positioned on each needle, sliding plates each provided with a plurality of slots and receiving the pins of the needles of a single frame, means reciprocally actuating said sliding plates horizontally, an actuating means imparting an up and down motion to said frames and second actuating means simultaneously imparting an intermittent and reverse rotary movement to said needles around their longitudinal axis and flexible partitions between the several needles of each of said frames.

4. A loom for the mechanical weaving of carpets having a plurality of frames laterally adjacent to each other and adapted to be vertically slidable, a plurality of needles each having a hook and being rotatably mounted in said frames, a sleeve and a pin poitione-d on each needle, sliding plates each provided with a plurality of slots and receiving the pins of the needles of a single frame, means reciprocally actuating said sliding plates horizontally each comprising ascreW,

rotatably mounted in said frame and engaging notches provided on said sliding plate,

a pinion positioned on said screw and a rack having teeth corresponding to the desired rotation of said needles, the racks being adjustably attached to said loom, and an actuating means imparting an up and down motion to said frames and second actuating means simultaneously imparting an intermittent and reverse rotary movement to said needles around their longitudinal axis.

5. A loom according to claim 4 having balancing plates symmetrically arranged relatively to said sliding plates and provided With notches engaging said screws.

6. A loom according to claim 4 having nuts and lock nuts allowing rotation and vertical adjustment of said needles with respect to said frames.

In testimony whereof, I have hereunto set my hand at Paris this 5th day of February,

GEORGES JOSEPH GILHET. 

